Re: type of paint
I have used automotive paint many times on fiberglass and it works well, just be aware of the danger of the 2 part paints. They are very toxic and need good ventilation when sprayed.
P rep the surface well, clean all silicone residue BEFORE sanding or you will just rub it in. Remember preperation is 80% or the paint job. Almost any good paint will work well on a good surface.
Also if you intend to spray the paint use a gravity gun in humid weather to avoid blushing.
The worst that can happen is a do-over and you don't have to tell anyone about that.